NonBooleanOption


1   package org.incava.jagol;
2   
3   import java.io.*;
4   import java.util.*;
5   
6   
7   /**
8    * Base class of all options, except for booleans.
9    */
10  public abstract class NonBooleanOption extends Option
11  {
12      public NonBooleanOption(String   longName, String   description)
13      {
14          super(longName, description);
15      }
16  
17      /**
18       * Sets from a list of command-line arguments. Returns whether this option
19       * could be set from the current head of the list.
20       */
21      public boolean set(String   arg, List args) throws OptionException
22      {
23          // String arg = (String)args.get(0);
24  
25          tr.Ace.log("considering: " + arg);
26          
27          if (arg.equals("--" + longName)) {
28              tr.Ace.log("matched long name");
29  
30              // args.remove(0);
31              if (args.size() == 0) {
32                  throw new InvalidTypeException(longName + " expects following " + getType() + " argument");
33              }
34              else {
35                  String   value = (String  )args.remove(0);
36                  setValue(value);
37              }
38          }
39          else if (arg.startsWith("--" + longName + "=")) {
40              tr.Ace.log("matched long name + equals");
41  
42              // args.remove(0);
43              int pos = ("--" + longName + "=").length();
44              tr.Ace.log("position: " + pos);
45              if (pos >= arg.length()) {
46                  throw new InvalidTypeException(longName + " expects argument of type " + getType());
47              }
48              else {
49                  String   value = arg.substring(pos);
50                  setValue(value);
51              }
52          }
53          else if (shortName != 0 && arg.equals("-" + shortName)) {
54              tr.Ace.log("matched short name");
55  
56              // args.remove(0);
57              if (args.size() == 0) {
58                  throw new InvalidTypeException(shortName + " expects following " + getType() + " argument");
59              }
60              else {
61                  String   value = (String  )args.remove(0);
62                  setValue(value);
63              }                
64          }
65          else {
66              tr.Ace.log("not a match");
67              return false;
68          }
69          tr.Ace.log("matched");
70          return true;
71      }
72  
73      /**
74       * Returns the option type.
75       */
76      protected abstract String   getType();
77  
78  }
79
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